| 摘要 |
The magnetic disk apparatus and methods for writing servo data in the magnetic disk drive apparatus detects a relative position between a magnetic head and a writing surface and performs a feedback on the detected relative position for determining the servo data writing position. Based on reference servo patterns that are preliminarily recorded on a portion of at least one surface of the disk, two pairs of head elements, arranged facing respective surfaces of the disk, alternately perform postscript operations of servo patterns while reducing a relative position error between the head and the disk in order to increase writing accuracy of the servo patterns writing operation.
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